This is just what I do for single fold bindings on mini quilts, but I do one extra step before I sew the binding to the quilt: I turn one long edge of the binding in a scant 1/4" before I sew it on the quilt, then I sew it onto the quilt using the raw edge, just like you do. I find it is less fiddly to do this than to try to press under that edge after it is sewn onto the quilt.

thank you, thank you, thank you. I'm a long time quilter, and I am a very visual learner (several things I just cannot do unless I have someone teach me in person). finishing up the binding ON THE QUILT has always escaped me. I THINK I GOT IT!